"The Google+ Hangout DOM [document object model] has an invisible kick button (just remove its visibility style) and when you click on it, you will see a nice kick bar!," Mansour said in a Google+ post.

The feature is one of a series of tweaks to Google's social network site. More substantive changes--corporate profiles or the ability to search Google+, for example--remain in the offing. In the meantime, the dominant social network, Facebook, is changing, too.